霍邱金安铁矿水文地质条件初步研究

霍邱铁矿田地处淮河流域中上游冲积平原Ⅱ级阶地地貌单元，系华东地区第一大铁矿床。金安铁矿位于霍邱铁矿田的中部，行政区划隶属于六安市霍邱县范桥乡，是一个水文地质条件较为复杂的沉积变质型铁矿床。依据矿床含水层剖面可划分为新生水、古壳水和基含水。矿区西高东低，地下水径流方向应为自矿床西向东流动。矿床地下水补给来源，特别是新生水的补给来源主要应为入渗到含水层的大气降水。金安铁矿地下水的径流途径主要有：（1）地表水体侧向渗入；（2）塌陷裂隙渗入；（3）断层破碎带进入；（4）可通过矿井排水孔或勘探时未封闭的钻孔直接进入地下含水层。矿床地下水的排泄则主要是矿井抽水，其次是位于矿区南部的泉水出露。

Preliminary Study on Hydrological Conditions of Jin'an Iron Ore Deposit of Huoqiu County

Huoqiu iron ore field which is locaded in the Ⅱ terrace unit of the alluvial plain in upper and middle reaches ot Huaihe river basin is the largest iron deposit in east China. Jin＇an iron deposit is a sedimentary-metamgrphic type deposit whom hydrogeological conditions are complicated, which is situated the central section of Huoqiu ore field, its administrative division belong to Fanqiao township of Huoqiu county in Lu＇an city. The aquifer profile can be divided into Xinsheng water, Guqiao water and Jiyan water, according to the characteristics of ore deposit. The runoff flow direction of groundwater of the deposit is from west to east because of mining area of west high east end. The recharge source of the deposit groundwater is mainly atmospheric precipitation which is infiltration into the aquifer stratum. The flow path of runoff of groundwater in Jin＇an iron deposit mainly includes that the surface waters laterally infiltrates, groundwater infiltrating collapse fissure, broken fault zone in, and so on. The groundwater discharge of the deposit mainly may be mine pumping, secondly, the exposed spring which is locaded in the southern area of mining.